Wateb tank for concrete mixers



Jan. 6, 1931.

G. JAEGER WATER TANK FOR CONCRETE MIXERS I 19, 1928 2 cs-Sheet 1 Original Filed 1..

Fig.1.

Fig.2.

Snvcntor GEBHARD JAEGER I we Av; attorney) G. JAEGER WATER TANK FOR CONCRETE MIXER. Jan. 6, 1931.

Original Filed May 19, 1928 2 Sheets-Sheet 2 Inventor GYEJBHARD JAEGER attorney Reissued Jan. 6, 1931 UNITED STATES fRe. 11,924

GIEBHARDJAEGER, OF COLUMBUS, OHIO WATER TANK ron. concnn'rn-mrxnns Original no. 1,710,876, dated April so, 1929, Serial No. 279,169, filed m 19, 1928. Application 1hr reissue filed ljovember 1, 1929. Serial Nth-404,185.. I

This invention relates to water supplying means for concrete mixers, and its object is to provide improved means. whereby the water is supplied to the mixing drum in pre- 5 determined quantity for each batch according, to the specification for each particular job the supply being automatically effected by, the ordinary operation of the machine in supplying the dry materials. In the ordinary operation of the machine a clutch shaft is operated to elevate the dry material charging bucket todrum charging position and according to the invention, as herein shown, the operation of the clutch shaft to raise'the 1 bucket also effects the supply of water before the charging bucket reaches the position for discharging its contents into the drum.

The invention is embodied in the example herein shown and described.

In the accompanying drawings- Figure 1 is a view in elevation looking at that side of the mixing machine having the drum charging bucket.

Fig. 2 is a top plan view,

a portion of the 2s bucket being broken off.

Fig. 3 is a plan view on a larger scale of the water tank and operating parts employed in connection therewith.

Fig. 4 is a section on the line IV-1V Fig. 3.

Fig. 5 is a section on the line V-V Fig. 4 with some parts in full.

Fig. 6 is a detail looking toward the right hand end of Fig. 3 with parts broken out and in section.

Fig. 7 is a sectional view on the line VII-VII Fig. 5 with the springomitted.

Fig. 8 is a detail in vertical section on the line VIII Fig. 6.

In the views 10 designates the mixing drum that, in the example shown, is of the nontilting variety and has'its charging opening at 10. Said drum is mounted on a suitable wheeled truck that carries an appropriate frame. The usual engine for rotating the drum is contained in the hood at 11, power from said engine also operating the charging bucket. The charging bucket is desig nated 12, it having a discharging spout at 12 and being pivoted to the frame on shaft 12 so that when swung upward the contents OFFICE.

thereof will flow through the spout 12 and into the mixing drum through the opening 10 The means for raising and lowering the charging bucket consists'of a pair of cables 13, 13, each connected at one end with aside of the bucket, said cables guided by a pair of sheaves14,14, and having their other ends connected with a pair of s ools 15, 15, on a power operated shaft16. aid shaft is operated at will through the interventionof a clutch devicejas' usual in such machines.

Said clutch device is containedin a housing at 17 and is controlled by a rock shaft 18 having a handle19 extending to within easy reach of the attendant. I j

To raise the bucket to charging position the handle 19 is drawn toward the observer in Fig. 1 thereby operatively enga ing the clutch in housing 17 with the sha 16 and causing the spools 15, 15, to wind up said cables and elevate the charging bucket,

Onthe power operatedshaft 16 is'a brake wheel 20; and on the clutch operating shaft 18 is an eccentric 21; and around saidbrake wheel and the eccentric is a brake band 22 that can be tightenedor loosened by rocking the clutch operating shaft 18. Thecharging bucket is lowered from char ing positionby gravity upon the release of t e clutch by the operation of the shaft 18. The eccentric 21 is so placed that upon the releaseof the clutch it functions to tighten the brake-band 22 to obtain the braking eifect desired, this being controlled at will by the attendant and normally so 'as to avoid unduerapid precipitation of the bucket to the ground position. The foregoing parts and operations are well known in mixers now in common use and need no further description, they being recited for the purpose of facilitating an understanding of the present invention which as before indicatedresides in an improved means cooperating with such a mechanism for automatically supplying to the drum the water ingredient needed for the concrete mixture. v v

The water tank, which is designated 25 is supported in the frame above the mixing drum. Pivoted within the tank near its bot tom is an outlet conductor 26 the axis of from the-tank into the mixing'drum.

The rotated part of the pivoted: intake has a crank arm 28 and the outlet is actuated by means of a lever 29 fulcrumed on the 'tankat 29", one end of said lever being connected with a crank arm 38 the end with said crank arm. The "outer arm of the 1 lever 29 hasattached to it a'strong spring 30' tending to hold the outlet in elevated position v with its inlet'end above the level ofthe water sup 1y. The extremity of the outer portion of t e lever 29 has arm 31 theflower'yportion of which is. provided' with a slot 32.; and connected with said slotted portion by means of an adjustable slide 33 is the throw arm 34 pivoted-$.34 on the frame. 4 The slide 33 1s held. in ad- .justed'position by suitable; means including clamping members35 and 36, each provide I with. a rib fitting in the slot and a'bolt 37 threading into part 35 (see F i 8). The edge of the dependent arm is provided with a scale by which the adjustmentof the throw arm 33; and therefore the depth of submergence of the inlet of the pivotedoutl'et and the quantity of water to be removed. The quantlty of water removed is determined by the depth to which the pivoted outlet is thrown.-f v

The shank of the handle 19 is provided of which has an anti-friction roller 39 swinging below the throw arm 33, so that when said handle: is swung forward to throwin the clutch to raise the bucket the antifriction roller lifts said throw arm 34 depresses the outlet conductor 26 to the level predetermined as aforesaid, one of which is shown by broken lines in Fig. 4. When saidmember is so depressed water flows therethrough from. the'tank into the end of a lever mixing drum in the quantity (predetermined while the bucket is be ng raise to supply the mixing-drumwith the solid materials.

Water is resupplied to the tank in aquam tity equal to that removed by means of a pipe 40 (see Fig. 5) said pipe containing a valve 41' connected with toggle42. actuated by a float 43 to close the valve. The float slides on the stem .43 that is provided with a stop 43", said stem projecting upward beyond the float so as to e struck by a tapper on one 44:.f1116111111ed at 44* on an upper edge of 'the't-a'nk; The other end of said lever44 has pivoted to it a depending arm 46 that is slidingly supported by means of across pin 17 in-a slot 48in a bracket 49 secured to the frame. A spring 50 attached to the bracket 49 and the arm 46tends to draw pivoted to it adependent arm 33 can be determined to limit the movement of, the

- can be ing part adapted to be depresse that arm toward a. stop 51 adjustably secured to the bracket.

The clutch shaft 18 is provided with a #crank arm 52 having thereon a lateral pin 52* that,-when the clutch shaftis rocked forward to cause the raisingof the bucket, rides downward on the'forward edge of the lower .end of the depending arm 16 pushing it rearof the rod46,b11tin this movement that rod is raised to cause the ta-pper 'thereon to strike thestem 43 and cause the openingj'of the valve in the water supply pipe. In the down position of the toggle arms operating the valve of the supply pipe the pivotal connecj tion of the upright stem is slightly below a line oining' the centers of the oppositepivots so as to prevent an accidental closing of the supply pipe valve 41. The supply pipe valve 41 is drawn tc closed' position'only whenthe float43 rises. and strikes astop 4 3 o'n the stem43 o c- I The clutch operating-shaft 18 has attached to it a downwardly standing crank jto which is attached one end of a rod 61 the other end thereof reaching to apoint where it struck by a lug 62 on the loader bucket 12 when thatbucket is raised to discharging position and rock the shaft 18 to its normal or primary position. An effect of this o'peration is to open automatically the supply pipe for resupplying the tank to the extent discharged and permitted by the closing of the valve in said pipeby' the risingfioat 43. p

Asupplemental float 56 is providechon an arm 57 which carries a valve 58 toopen and close a port or hole in the bottom of the chamber containing the main float 13, said hole permitting the rapid discharge of the water from said chamber when the water has sufliciently lowered in the mainta'nkl. The supfloat chamber before that chamber is full and permits a rapid filling of the chamber over thetop and therefore a quick action of the float 4E3 to'close the valve of the supply pipe.

The forms of. the parts can be changed without departing fromthegist of the invention as claimed.

What I claim is:

1. In a concrete mixer having amixing izo drum, a loader bucket, a power operated shaft for operating the bucket and a. clutch means for controlling the same, a tank for receiving water, a conductor forremoving water from said tank and conveying the same to the mixing drum, said conductor includin a swingintothe body of the water in the tank by the'actuation of the clutch means to operate the loader bucket.

2. In a concrete mixer having a mixing drum, a loader bucket, a power operated shaft for operating the bucket and a clutch means for controlling the same, a tank for receiving water, a conductor for removing water from said tank and conveying the same to the mixing drum, said conductor including a swinging part adapted to be depressed into the body of the water in the tank by the actuation of the clutch means to operate the loader bucket and means for varying the depth of the depression of said swinging part of the conductor.

3. In a concrete mixer having a mixing drum, a loader bucket, a power operated shaft for operating the bucket and a clutch means for controlling the same, a tank for receiving water, a conductor for removing water from said tank and conveying the same to the mixing drum, said conductor including a swinging part adapted to be depressed into the body of the water in the tank by the actuation of the clutch means to operate the loader bucket, a water supply means for the tank, a valve actuated by a float to close the Water supply, and means actuated by the loader bucket toactuate the clutch control to open said water. supply valve.

at. In a concrete mixer having a mixing drum, a loader bucket, a power operated shaft for operating the bucket and a clutch means for controlling the same, a tank for receiving water, and a conductor for removing water from said tank and conveying the same to the mixing drum, said conductor including a swinging part adapted to be depressed into the body of the water in the tank by the actuation of the clutch means to operate the loader bucket, a water supply means for the tank, a valve actuated by a float to close the water supply, and means actuated by the loader bucket to actuate the clutch control means to disconnect the clutch from the power operated shaft and open said water supply valve.

5. In a concrete mixer having a mixing drum, a loader bucket, a power operated shaft for operating the bucket and a clutch means for controlling the same, a tank for receiving water, a water supply conductor thereto, a conductor for removing water from said tank and conveying the same .to the mixing drum, a valve for the supply conductor and a float for actuating the same to close the water supply, a supplemental chamber in which said oat operates, said chamber having a drain port, a valve for opening and closing said port and a supplemental float operating said valve.

6. In a concrete mixer having a mixing drum, a loader bucket, a power operated shaft for operating the bucket and a clutch means for controllingthe same; "a tank for receiving water, a water sup-ply conductor" thereto, a 'conductor for removing water from saidtank and conveying thesame to the'mixing drum, 'alvalve for the water supply conductor and afloat for" actuating the valve to close the water supply, and a tappet' actuated by the "clutch means for opening said valve.

' '7.'Infa concrete-mixer having a-mixing drum,aloaderbucket, a power operated shaft for operating the bucket and a clutch means controlling the same, a tank for receiving water, a water supply conductor for the same, a conductor for removing water from said tank and conveying the same to the mixing drum, a valve for the water supply conductor and a float for actuating the valve to close the water supply, a tappet connected with the clutch control means for operating said supply valve, and means actuated by the loader bucket for actuating the clutch control means and the tappet.

8. In a concrete mixer, a tank for supply-. ing water thereto, a conductor for removing water from the tank and conveying the same to the mixer, said conductor including a movable part adapted to be depressed into the water of the tank and automatically establish a flow of the water into the conductor, a water supply means for the tank, a valve in said supply means and a float to close said valve, a supplemental chamber in which said float operates, said chamberhaving a drain port and a valve for opening and closing said port,

9. In a concrete mlxer having a mixing Iv tank, and means for restoring water to the tank in an amount substantiallyequal to that discharged, said means actuated by the lowering of the level of the water in said tank due to said discharge.

10. In a concrete mixer having a mixing drum, a loader bucket, a power operated means for operating the bucket, means for intermittently supplying a predetermined uniform quantity of water to the mixing drum consisting of a tank, a water supply conductor therefor, a conductor for removing'water from said tank including a movable part within the tank having its inlet normally held above the maintained normal level ofvwater inthe tank, means oper- 1 ated; wit vv 1511a oppration ofthe. power-- shatt for depress pg sald -movab1e' pug-t pf the can ductor toghscharge. t theuuxmg drum the predetemnned ,quantlty 0f w aterf frqm the x tank, and a=floabe0ntro1led valvein' the a I w supply conductor for restoring water toithe 7 H tank in an-amount substantially equal to '7 'that'discharged, saidfloat controlled In actuated by the lowering-of the leve'l of the m water in said tank due to said, dischar%.

f "GEBHABD JAEGE 

